Modular lamp unit for flexibly configured lamp assembly

ABSTRACT

A lamp assembly comprises at least one lamp unit. Each lamp unit comprises an outer frame with four corners, a middle frame and an inner frame enclosing a lamp. The outer frame has conductive blocks at each corner and the conductive blocks at diagonal corners forming an electrode electrically connected to the lamp. The middle frame has two outer shafts and two inner shafts, wherein the outer shafts are pivotally connected to inner side of the outer frame and the inner shafts are pivotally connected to corresponding sides of the inner frame. The conductive block has at least one threaded hole and the outer frame has a hole corresponding to the threaded hole. The adjacent lamp units can be connected through a connection unit and arranged in stacked or hanging style.

FIELD OF THE INVENTION

[0001] The present invention relates to a lamp assembly, especially to a lamp assembly composed of at least one lamp unit, which can be individually used or assembled together for use.

BACKGROUND OF THE INVENTION

[0002] The conventional lamps such as ceiling lamps, wall lamps and desktop lamps are generally used individually and not in combinative way. A plurality of lamps can be stringed by conductive cord to form a lamp string for projection lamps or decorative lamps. However, this type of lamp string is hard to fix and configure for decoration. FIG. 1 shows a hanging lamp 1 a with a fixing post 1 b to fix the hanging lamp 1 a to a ceiling. This type of hanging lamp 1 a can be connected in series, but lacking flexibility.

SUMMARY OF THE INVENTION

[0003] It is an object of the present invention to provide a lamp assembly composed of at least one lamp unit, wherein individual lamp unit can be mounted on a plane for use and multiple lamp units can be connected by connection unit for use in wall-mounting or hanging style. The lamp unit has pivotal unit to adjust light emission direction.

[0004] It is another object of the present invention to provide a lamp assembly composed of at least one lamp unit, wherein each lamp unit has conductive blocks and the lamp units can be such arranged that the adjacent conductive blocks of two adjacent lamp units have same polarity. The lamp units can be connected through connection unit and arranged in modular way. Therefore, the lamp units can be placed in planar or three-dimension manner for decoration.

[0005] To achieve above object, the present invention provides a lamp assembly having at least one lamp unit. Each lamp unit comprises an outer frame with four corners, a middle frame and an inner frame enclosing a lamp. The outer frame has conductive blocks at each corner and the conductive blocks at diagonal corners forming an electrode electrically connected to the lamp. The middle frame has two outer shafts and two inner shafts, wherein the outer shafts are pivotally connected to inner side of the outer frame and the inner shafts are pivotally connected to corresponding sides of the inner frame. The conductive block has at least one threaded hole and the outer frame has a hole corresponding to the threaded hole. The adjacent lamp units can be connected through a connection unit and arranged in stacked or hanging style.

[0006] The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:

BRIEF DESCRIPTION OF DRAWING

[0007]FIG. 1 shows a perspective view of prior art lamp;

[0008]FIG. 2 shows a perspective view of the lamp unit of the present invention;

[0009]FIG. 3 shows an exploded view of the lamp unit of the present invention;

[0010]FIG. 4 shows a top view of the lamp unit of the present invention;

[0011]FIG. 5 shows the electrode arrangement for the inventive lamp assembly;

[0012]FIG. 6 shows a perspective view of the lamp unit hung horizontally and placed on wall;

[0013]FIG. 7 shows a perspective view of the lamp unit hung vertically and placed on ground;

[0014]FIG. 8 shows a perspective view of the lamp unit assembled into rectangular post;

[0015]FIG. 9 shows a perspective view of the lamp unit assembled into hexagonal post; and

[0016]FIG. 10 shows a top view of the lamp unit of the present invention placed on wall.

DETAILED DESCRIPTION OF THE INVENTION

[0017] With reference to FIGS. 2 and 3, the present invention is intended to provide a lamp assembly. The lamp assembly is composed of at least one lamp unit 1 with an outer frame 2 of rectangular or other shape. The outer frame 2 shown in these figures is square shape with four corners, wherein each two diagonal corners are connected by an inner lead 221 or an outer lead 231 to form an electrode. The outer frame 2 has a body 21 with four sides of rectangular strip shape and composed of an inner case 22, an outer case 23, a baffle 24, an outer sash 25 and an inner sash 26.

[0018] The inner case 22 and the outer case 23 are partitioned by the baffle 24 into an inner half 241 and an outer half 242. The baffle 24 has a through groove 243 at each corner thereof and two clamping grooves 244 on both sides of the through groove 243, through which two wings 246 of a conductive block 245 are inserted. The conductive block 245 strides the inner half 241 and the outer half 242 and has a through threaded hole 247. In FIG. 3, the four conductive blocks 245 are labeled as 245 a, 245 b, 245 c and 245 d in counterclockwise order. Each conductive block 245 has two outer sides abutting to the edge of the outer case 23 and the two outer sides have two threaded holes 248 a and 248 b, respectively, and communicating with the through threaded hole 247. The outer case 23 has two through holes 235 corresponding to the two threaded holes 248 a and 248 b. The through hole 235 has a lateral groove 238 at proximity thereof and the lateral groove 238 has a shrunk mouth 239 at edge thereof.

[0019] Each of the wings 246 has a set threaded hole 249, wherein two wings 246 a and 246 b are provided for the conductive block 245 a, two wings 246 c and 246 d are provided for the conductive block 245 b, two wings 246 e and 246 f are provided for the conductive block 245 c, and two wings 246 g and 246 h are provided for the conductive block 245 d. Moreover, the wings of the conductive blocks 245 a and 245 c are located in the inner half 241, and the wings of the conductive blocks 245 b and 245 d are located in the outer half 242. The wing 246 a of the conductive block 245 a is fixed at one end of the inner lead 221 of the inner half 241 by screwing a setscrew 222 to the set threaded hole 249. The wing 246 c of the conductive block 245 b is fixed at one end of the outer lead 231 of the outer half 242 by screwing a setscrew 232 to the set threaded hole 249. The other end of the inner lead 221 is connected to the wing 246 e of the conductive block 245 c diagonal to the conductive block 245 a; the other end of the outer lead 231 is connected to the wing 246 g of the conductive block 245 d diagonal to the conductive block 245 b. The other wing 246 b of the conductive block 245 a is fixed at one end of the inner lamp lead 223 by screwing a setscrew 224 to the set threaded hole 249. The other wing 246 d of the conductive block 245 b is fixed at one end of the outer lamp lead 233 by screwing a setscrew 234 to the set threaded hole 249. The other end of the inner lamp lead 223 (the outer lamp lead 233) passes through in outer shaft 31 of a middle frame 3, through an inner space of the middle frame 3 and enters an inner frame 4 through an inner shaft 32 of the middle frame 3. Moreover, the other end of the inner lamp lead 223 (the outer lamp lead 233) is connected to an electrode (another electrode) of a lamp 5 such that the leads in the inner half 241 form an electrode set and the leads in the outer half 242 form another electrode set.

[0020] The outer sash 25 and the inner sash 26 are assembled to an inner opening and an outer opening of the outer frame 2 and retained by inserting inner inserts 251 and outer inserts 261, respectively, inserted into corresponding clamping grooves 236 and 237. The outer sash 25 and the inner sash 26 have holes 253 and 263 corresponding to both sides of the through threaded hole 247, and concave dents 252 and 262.

[0021] The outer frame 2 has two inner sides 22 pivotally connected to two outer shafts 31 on two outer sides of the middle frame 3, wherein the two inner sides 22 have pivotal grooves 27 corresponding to the outer shafts 31 and the outer shafts 31 are inserted into the pivotal grooves 27 through the inner half 241. A pivotal cover 28 is covered on upper half of the outer shaft 31 and both sides of the pivotal cover 28 are screwed to the baffle 24. The outer shaft 31 has a first swelling 33 connected to a second swelling 34 of an inner shaft 32 through an angle plate 35. The inner shafts 32 on the inner sides of the middle frame 3 are pivotally inserted into holes 43 formed on the inner frame 4 and are retained by corresponding cap 46 and retainer 45.

[0022] Therefore, the inner frame 4 is pivotally connected with the middle frame 3 and has 45-degree roll around the middle frame 3, as shown in FIG. 4. More particularly, the inner frame 4 has a bump 412 on an outer side 411 thereof and the rotatable in an embowed groove 342 formed on an inner surface 341 of the second swelling 34. As shown in FIG. 4, the middle frame 3 is pivotally connected with the outer frame 2 and has 45-degree swing around the outer frame 2. More particularly, the outer shaft 31 has an outer bump 311 moved between two clamping bumps 281 on the pivotal cover 28.

[0023] The lamp 5 is placed in the inner frame 4 and has two electrodes connected to the lamp leads 223 and 233, respectively. The middle frame 3 has an meddle sash 37, wherein the angle plate 35 with inner shafts 31 and outer shafts 32 and angle plate 36 are locked to rear surface of the meddle sash 37. The inner frame 4 comprises an inner panel 41 and an outer panel 42 locked to each other. The inner panel 41 has holes 43 and the outer panel 42 has a bowl 44 concave inwardly for receiving a shade of the lamp 5. The inner panel 41 has a central aperture 413 through which light can pass.

[0024]FIG. 5 shows the electrode arrangement for the inventive lamp assembly comprising a plurality of lamp units 1. The two corners of the lamp unit 1 diagonal to each other are functioned as anode and the other two corners of the lamp unit 1 diagonal to each other are functioned as cathode. The plurality of lamp units 1 is such arranged that adjacent corners are of the same polarity. Therefore, two wires can be connected to corresponding anodes and cathodes on the lamp units 1 to provide electric power to the lamp assembly.

[0025] As shown in FIGS. 6 and 7, the lamp units 1 are assembled to be hanging lamp assembly or stacked lamp assembly. In hanging lamp assembly, the lamp assembly is hung by two conductive wires 60 through two connectors 61, wherein the lamp units 1 are arranged in flat way as shown in FIG. 6 or erect way as shown in FIG. 7, and the lamp units 1 can also be in horizontal, vertical or array arrangement. The adjacent two lamp units 1 are connected through a connection unit 6. Moreover, the hanging lamp assembly can be supported by four wires as shown in FIG. 8, wherein two extra wires 62 are used for balance. FIG. 7 shows the case wherein the hanging lamp assembly is supported by a single wire 62 and the two conductive wires 60 are connected to lateral side of the lamp unit 1 and clamped to a wall 7. Each of the wires 62 and the conductive wires 60 can be connected to a wall retainer 68 through connector 61, wherein the connector 61 for the conductive wire 60 is also conductive and the connector 61 for the wire 62 is insulative.

[0026] The connection unit 6, as shown in FIGS. 5 to 10, further comprises straight connection plate 63 (as shown in FIGS. 5 to 8), angle connection plate 64 (as shown in FIG. 8), hexagonal connection plate 65 (as shown in FIG. 9), straight connector (conductive connector), link connector (conductive connector 61 as shown in FIGS. 6 and 7) and triangular pad 66 (as shown in FIG. 10), besides conductive wire 60, (conductive connector 61, wire 62 and wall retainer 68.

[0027] The lamp units 1 can also be arranged in stacked way. In other word, both ends of the straight connection plate 63 are clamped to the lateral groove 238, the inner groove 252 or the external groove 262 of the outer frame 2 and then the straight connection plate 63 is fixed. As shown in FIG. 2, the straight connection plate 63 has a narrow neck 631 at center thereof to form two swollen ends and each swollen end having a through hole 632. A screw 67 passes through the through hole 632 and the hole 235, the hole 253 or the hole 263 on the groove to be connected. Afterward, the screw 67 is screwed to the threaded hole 248 or the through threaded hole 247. Therefore, one end of the straight connection plate 63 is clamped to a lamp unit 1 and another end of the straight connection plate 63 is clamped to an adjacent lamp unit 1. The lamp units 1 are assembled laterally or longitudinally as shown in FIGS. 5 to 8.

[0028] The angle connection plate 64 and the hexagonal connection plate 65 have similar structure as the straight connection plate 63 but with different shape, and are used for junction between rectangular lamp assembly as shown in FIG. 8 and junction between hexagonal lamp assembly as shown in FIG. 9. The two lamp units 1 in the rectangular lamp assembly can also be connected by an outer frame 2. Moreover, the lamp assembly can also be placed at a corner as shown in FIGS. 6 and 10. The lamp unit 1 has triangular pads 66 on both sides thereof. The triangular pad 66 has a through hole 661 passing through a hypotenuse to a lateral side thereof and a clamping hole 662 on another lateral side thereof and adjacent to the through hole 235. A connection section 663 is used to connect the through hole 661 with the clamping hole 662 and a retainer 664 is retained on the wall through the through hole 661. Therefore, the triangular pads 66 can shield both side of the lamp unit 1 when being placed against the wall 7.

[0029] To sum up, the lamp assembly according to the present invention uses three frames to provide swing and roll movement and uses connection unit to provide electric connection among the lamp units. The lamp units can be flexibly assembled to lamp assembly of various geometric styles.

[0030] Although the present invention has been described with reference to the preferred embodiment thereof, it will be understood that the invention is not limited to the details thereof. Various substitutions and modifications have suggested in the foregoing description, and other will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims. 

I claim:
 1. A lamp assembly, comprising a lamp unit comprising an outer frame, a middle frame and an inner frame, the inner frame enclosing a lamp and allowing emission of light from the lamp, the outer frame having four corners and a conductive block at each corner, the conductive blocks at diagonal corners forming an electrode electrically connected to the lamp, the middle frame having two outer shafts collinearly arranged on two outer sides thereof and two inner shafts collinearly arranged on two inner sides thereof, wherein the outer shafts are pivotally connected to inner side of the outer frame and the inner shafts are pivotally connected to corresponding sides of the inner frame, the conductive block having at least one threaded hole and the outer frame having a hole corresponding to the threaded hole.
 2. The lamp assembly as in claim 1, wherein the outer frame is composed of an inner case, an outer case, a baffle, an outer sash, an inner sash, four conductive blocks, two conductive leads, two lamp leads, the baffle placed between the case frame and the outer case, the outer sash covering on an opening of the outer case and the inner sash covering on an opening of the inner case, each of the conductive leads connecting between two conductive blocks on two diagonal corner of the outer frame and placed on each side of the baffle, one of the lamp leads connected to a conductive block and passing through the outer shaft and the inner shaft of the middle frame and then connected to an electrode on the lamp, the conductive blocks striding the baffle and having two through hole on two outer sides thereof, the outer sash and the inner sash having holes on each corner thereof.
 3. The lamp assembly as in claim 1, further comprising a connection unit.
 4. The lamp assembly as in claim 3, wherein the connection unit comprises two conductive connectors, each of the conductive connectors connected to the threaded hole of the conductive block through a conductive wire.
 5. The lamp assembly as in claim 3, wherein the connection unit comprises at least one connector connected to the threaded hole of the conductive block through a wire.
 6. The lamp assembly as in claim 3, wherein the connection unit is a connection plate with one end connected to the threaded hole of the conductive block.
 7. The lamp assembly as in claim 6, wherein the connection plate has another end connected to the threaded hole of adjacent conductive block of another lamp unit.
 8. The lamp assembly as in claim 6, wherein the connection plate is one of the straight shape, angled shape and 120-degree banding shape.
 9. The lamp assembly as in claim 3, wherein the connection unit is a triangular pad with a hypotenuse and two lateral sides, a through hole passing through the hypotenuse and one lateral side, a clamping hole passing through another lateral side, a connection section connecting the through hole with the clamping hole, a retainer retained on a wall through the through hole; whereby the triangular pad shielding distal side of the lamp unit. 